Joiner&#39;s clamp.



No. 848,036. v PATENTED MAR. 26, 1907.

A. KRUGBR.

JOINER.S GLA MP.

APPLICATION FILED Jun 17. 1905.

! UNITE slr s'rns Parr FFIGE.

JOINERS CLAMP.

Specification of Letters Patent.

Patented March 26, 1907.

Application filed June 17,1905. Serial No. 265,650.

To all whom it may concern:

Be it known that I, AUGUST Knr'ienn, a subject of the German Emperor,and residing at Koslin, Germany, have invented certain new and usefulImprovements in Joiners Clamps, of which the following is aspecification.

My invention relates to an improved clamp especially adapted forcompressing the freshly-glued joints in the construction of framework,furniture, and the like.

The princi le on which. this tool is constructed is tiat of having threepoints of pressure moving in conjunction with one another, the pressureexerted at two of the points acting in the direction toward or away fromeach other, while at the third point the pressure is exertedperpendicularly to the first said direction. The tool is thus adaptedfor the most varied classes of work requiring gluing. It can be applied,for example, when it is necessary to attach fillets to the ends ofboards or to join two boards together or to secure two fillets with amiter-joint. In addition to its use in joinery the clamp will also proveserviceable for smiths and fitters work.

My invention is illustrated in the accompanying drawing, in which Figure1 is an elevation, partly in section. Fig. 2 is an edge view, and Figs.3 and 4 are detail views.

In the drawing, is designates the handle, which is provided with aninteriorly-threaded socket, within which is threaded the upper end ofthe spindle It. An eXteriorly-threaded sleeve 0 is arranged on thespindle is, through which the spindle projects. Upon the sleeve 0 ismounted the head (1, connected by links 6 to the upper ends of the limbsa, carrying aw-faces A link Z is pivoted at its outer ends to the jawsor limbs and centrally is threaded to receive the lower end of thesleeve 0 Above the collar d, loosely encircling the sleeve 0 is a ringm, provided on its upper edge with teeth g for engagement with similarteeth (1 on the handle 7c. (See Figs. 3 and 4.) This ring is providedwith vertical slots 0, through which pass screws a, one of which isscrewed into the sleeve 0 and the other passes through the sleeve andextends into and travels in a longitudinal slot p in the spindle is.When it is desired to operate the spindle k only, the ring m isuncoupled from the handle it and the latter rotated, whereby the threadscause vertical movement of the spindle. When it is desired to operatethe spindle k and sleeve 0 in unison, the ring m is ushed upwardly toengage its teeth with t ose of the handle. In this latter position uponrotation of the handle motion 1s imparted to both the spindle and sleevethrough the ring on and screws 71, causing the spindle and sleeve tomove vertically and the jaws to open or close, owing to their threadedconnection with the sleeve. The link I) of the clamps instead of beingstraight, as shown, may obviously be curved in any desirable manner. Thepressingjaws may be removably secured to the limbs a, so that single ordouble faced ones may be employed, as desired. A further advantage of mynew clamp is that it admits of an outward pressure being exerted. Forthis reason the position of double-faced jaws is advantageous.

What I claim, and desire to secure by Letters Patent, is

1. A joiners clamp comprising a collar smoothly bored, a air of jaws orlimbs, a pair of links pivota .y connecting one end of each jaw toanopposite end of said collar, a single link connecting the jawsintermediate their ends, a handle, a hollow screwspindle carried by thehandle swiveled in the collar and threaded through the singleconnecting-link, a solid spindle within the hollow spindle andprojecting beyond the end thereof, and means whereby the hollow spindleand solid spindle may be simultaneously actuated, or only the hollowspindle actuated, substantially as described.

2. A joiners clamp comprising a collar smoothly bored, a pair of jaws orlimbs a pair of links pivotally connecting one end of each jaw to anopposite end of said collar, a single link connecting the jawsintermediate their ends, a handle having a sleeve with teeth formed inits lower edge, a hollow screw-spindle carried by the handle swiveled inthe collar and threaded through the single conneeting-link, a solidspindle within the hol- I In testimony that I claim the foregoing as lowspindle and projecting beyond the end l my invention 1 have signed myname in presthereof, a sleeve connected to the solid spinenee of twosubscribing witnesses. dle and having teeth in its upper edge, andAUGUST ICRUGER.

5 means for engaging or disengaging these 1 lVitnesses:

teeth with those of the handle-sleeve, sub- FERDINAND WITTE, stantiallyas described. IDA BAUMGART.

